CN1954576B - Technique device and system for handling initiation requests - Google Patents

Technique device and system for handling initiation requests Download PDF

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Publication number
CN1954576B
CN1954576B CN 200480043074 CN200480043074A CN1954576B CN 1954576 B CN1954576 B CN 1954576B CN 200480043074 CN200480043074 CN 200480043074 CN 200480043074 A CN200480043074 A CN 200480043074A CN 1954576 B CN1954576 B CN 1954576B
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server
request
associated
client
contact host
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CN 200480043074
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Chinese (zh)
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CN1954576A (en
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J·布鲁斯
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艾利森电话股份有限公司
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Priority to PCT/EP2004/005438 priority Critical patent/WO2005112384A1/en
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Publication of CN1954576B publication Critical patent/CN1954576B/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/10Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network
    • H04L67/1002Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers, e.g. load balancing
    • H04L67/1004Server selection in load balancing
    • H04L67/1008Server selection in load balancing based on parameters of servers, e.g. available memory or workload
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/08Network architectures or network communication protocols for network security for supporting authentication of entities communicating through a packet data network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/10Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network
    • H04L67/1002Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers, e.g. load balancing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/10Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network
    • H04L67/1002Network-specific arrangements or communication protocols supporting networked applications in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers, e.g. load balancing
    • H04L67/1004Server selection in load balancing
    • H04L67/1017Server selection in load balancing based on a round robin mechanism
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/14Network-specific arrangements or communication protocols supporting networked applications for session management

Abstract

A technique is described for handling initiation requests directed to a contact host from a plurality of clients that enables the handling of large number of requests and provides design stage flexibility. A contact host receives the requests from the clients. Thereafter, an acknowledgment is sent to each requesting client so that direct data transfer may commence between the client and server bypassing the contact host. This acknowledgment may be generated and sent by either the contact host or by the associated server. In some variations, each request is authenticated prior to the association of each request.

Description

处理启动请求的方法、装置和系统 The method of processing start request, the apparatus and system

技术领域 FIELD

[0001] 本发明涉及通信。 [0001] The present invention relates to communications. 更具体而言,本发明涉及一种用于处理与确认(acknowledge) 传输协议相关联的启动请求(initiation request)的技术。 More particularly, the present invention relates to a technique for processing the activation request confirmation (Acknowledge) associated transport protocol (initiation request) for.

背景技术 Background technique

[0002] 运行在IP顶层的可靠传输协议,诸如流控制传输协议(SCTP),经常被网络组件(例如,客户等等)使用来经由应用协议数据单元(APDU)在建立的连接上(例如,面向连接的服务,诸如由SCTP提供的服务)与应用服务器通信。 [0002] IP protocol running on top of a reliable transport, such as a stream control transmission protocol (the SCTP), network component is often (e.g., client, etc.) by using Application Protocol Data Unit (APDU) at the connection establishment (e.g., connection-oriented services, such as services provided by SCTP) communicate with the application server. 使用这种配置,网络组件通常使用主机服务器群,为了可伸缩性的目的,该主机服务器群可以部分地基于要求每个网络组件具有几个与之相关联的物理资源。 With this configuration, network components commonly used host server farm, for scalability purposes, the host server farm may be partly based on the requirements of each network component having physical resource associated therewith several.

[0003] 图1显示了SCTP信令100,该信令与客户110 (端点EP A)和服务器120 (端点EP Z)之间的关联(用于应用数据传输,等等)的建立有关。 [0003] FIG. 1 shows the SCTP signaling 100, in association (for data transmission applications, etc.) between the signaling with the client 110 (end point EP A) and a server 120 (end point EP Z) related. 若干传输地址被与客户100(即, 其是多归属端点)相关联,该客户端100包括用于客户的有效IP地址和被选择用于客户的端口号的对(其通常仅仅对SCTP关联的有效期内有效)。 A plurality of transport addresses and the client is 100 (i.e., which is a multi-homed terminal) associated with a client 100 comprises a valid IP address for the client and the client is selected for the port number (which usually only the SCTP association within the validity period valid). 该IP地址作为列表{IP Al,..., IP An}给出,端口号被指示为P A0 The IP address as the list {IP Al, ..., IP An} is given, the port number is indicated as P A0

[0004] 相似地,对于服务器120具有传输地址,它们是从IP地址列表{IP Zl,. . .,IP Zm} 和端口号PZ中建立的对。 [0004] Similarly, for the server 120 has a transmission address, which is the IP address list {IP Zl ,..., IP Zm} and a port number of the PZ established. 通常,用于服务器120的端口号是为在SCTP顶层的特定应用而定义的已知端口(例如,在用于MTP3用户自适应层(M3UA)的协议中定义的端口号2905)。 Typically, the port number for the server 120 is known for a particular application port in the top SCTP defined (e.g., as defined in the protocol for the MTP3 user adaptation layer (the M3UA) a port number 2905). 在任何情况下,与服务器120相关联的端口号和IP地址(和/或相应的应用)必须对所有客户110来说都是已知的。 In any case, the port number of the server 120 and associated IP address (and / or corresponding applications) are known to be 110 for all customers.

[0005] 用于建立关联的过程开始于:客户110经由用于服务器120的有效IP地址的其中一个和服务器端口号来发送启动请求(例如,在SCTP的情况下是INIT分组)130到服务器120。 Process [0005] used to associate begins: the client 110 sends an activation request via the server, and wherein a port number for a valid IP address server 120 (e.g., in a case where the INIT packet of SCTP) 130 to the server 120 . 请求130将包括对客户110有效的IP地址列表和端口号,指示为IP地址列表和端口号。 The client request 130 includes a list of valid IP address and port number 110, indicating the IP address and port number list. 一个典型的请求130可以包括:目的地IP地址=IP Zy;源IP地址=IP Ax;(源端口=PA ;目的地端口= PZ;程序块=INIT ;端点IP地址={IP Al,...,IP An})。 A typical request 130 may include: a destination IP address = IP Zy; source IP address = IP Ax; (source port = PA; destination port = PZ; chunk = INIT; end point IP addresses = {IP Al, .. ., IP An}). 虽然目的地IP地址和源IP地址通常被包括在IP分组报头中,但是括号中剩余的参数作为SCTP 分组报头被发送,该SCTP分组报头被包含在IP分组有效负荷中。 Although the destination IP address and source IP address typically include parameters in the IP packet header, but the remaining brackets is transmitted as SCTP packet header, the SCTP packet header is included in the IP packet payload.

[0006] 在响应中,如果服务器接受启动请求130,服务器120将使用确认(例如,在SCTP 情况下是INIT ACK消息)140来回答。 [0006] In response, if the server 130 accepts start request, the server 120 uses the acknowledgment (e.g., in the case of SCTP INIT ACK message) 140 to answer. 确认140被指向请求130被从中接收的相同地址,但是其可以由服务器120从与接收INIT消息的地址所不同的地址发送(例如,IP地址Zz)。 Acknowledgment 140 is directed to the same address from which the request 130 is received, but it may be sent by the server 120 and the address received from the different INIT message addresses (e.g., IP address, Zz). 确认140还将包括定义服务器120端点的数据,诸如有效IP地址和在INIT消息中已经用作为目的地端口号的相同端口号。 Confirmation 140 also comprises a data endpoint definition server 120, such as a valid IP address and a port number has been used is the same as the destination port number INIT message. 一个典型的确认130可以包括:目的地IP地址=IP Ax ; 源IP地址=IP Zz ;(源端口= PZ ;目的地端D=PA ;程序块=INIT ACK ;端点IP地址={IP Zl,...,IP Zm})。 A typical acknowledgment 130 may comprise: a destination IP address = IP Ax; Source IP address = IP Zz; (source port = PZ; destination terminal D = PA; chunk = INIT ACK; end point IP addresses = {IP Zl, ..., IP Zm}). 在客户110已经接收到该确认之后,为了安全的目的可以交换若干更多的消息(即,进行握手),这样各种传输地址对于每个端点来说都是已知的,以便在它们中选择交换有效负荷数据所需要的地址。 After the client 110 has received the confirmation, for security purposes may be exchanged several more messages (i.e., handshake), so that various transport address for each endpoint are known for, in order to select them address exchange payload data required. [0007] 上述SCTP关联被建立的传统方法易受到服务拒绝(DoS)攻击的影响,因为对各种服务器的大量自动请求会削弱通信交换(通过有效地禁止服务器)。 Conventional method [0007] SCTP association is established above are susceptible to the influence service denial (DoS) attacks, because a large number of various servers Request weaken communications exchange (effectively disabled by the server). 虽然在一些环境中当通信量需求高的时候可以通过添加更多的服务器以及建立服务器群来提高处理功率,但是各种客户必须被通知如何最好地使用增加的资源。 Although when high traffic demand may in some circumstances by adding more servers and server farms established to improve the processing power, but a variety of customer must be informed of how best to use the additional resources. 因此,如果所有各种客户之间没有协调的话就不可能获得负荷平衡。 Therefore, if there is no coordination between all of the various clients, then it is impossible to obtain a load balancing. 虽然域名系统(DNS)可以提供有关负荷共享的好办法,但是DNS的使用以及相应的域名对于一些应用来说过于麻烦。 Although Domain Name System (DNS) can provide a good idea about burden sharing, but the use of DNS and the corresponding domain name for some applications too cumbersome.

[0008] 在类似的领域中,路由器(诸如因特网路由器)被用来确定数据如何经由最有效的路由发送到它想要的目的地。 [0008] In a similar field, a router (a router such as the Internet) is used to determine how it wants the data to the destination via the most efficient route. 此外,路由器用于对通信量分段(例如,通过监控每个数据分组的传输)并提供路由的冗余。 Further, a router for the traffic segment (e.g., monitoring transmission of each data packet through) and to provide routing redundancy. 虽然该配置可以用来确保该数据以有效的方式传输到接收方,但是路由器在很大的数据通信量期间易于受过负荷影响。 While this arrangement may be used to ensure that the data is transmitted in an efficient manner to the recipient, but router impact load easily received data traffic during large.

[0009] US 2002/0138618A1公开了一种连接管理技术,它使用安排在内部网络和外部网络之间的负荷平衡服务器阵列控制器来实现。 [0009] US 2002 / 0138618A1 discloses a connection management technique that uses a load balancing server array controller arranged between the internal network and the external network is achieved. 该控制器从外部网络接收连接请求,转换该连接请求并将转换后的连接请求转发到选择的内容服务器。 The controller receives a connection request from an external network, converts the connection request and the connection request is forwarded to convert the selected content server. 响应于该转换后的连接请求, 内容服务器发送TCP/IP确认消息给控制器。 In response to the post-conversion connection request, the content server sends a TCP / IP acknowledgment message to the controller. 该控制器然后转换该确认消息并将转换后的确认消息转发给已经在开始从中接收到连接请求的客户。 The controller then converts the acknowledgment message and converts the acknowledgment message has been forwarded to the client from which the connection request is received at the beginning.

[0010] 因此,将理解仍然需要改进的技术来接收和确认大量的启动请求,其可以被修改, 而不需要与多个客户进行显著的协调。 [0010] Thus, it will be appreciated still a need for improved technology to receive and acknowledge a large number of start-up request, which may be modified, without the need for significant coordination and a plurality of clients.

发明内容 SUMMARY

[0011] 本发明可以体现为一种处理从多个客户指向联系主机的启动(或建立)请求的方法。 [0011] The present invention may be embodied as a plurality of clients from a processing start point of contact host (or establishing) method requests. 所述方法包括以下步骤:由联系主机接收请求,由联系主机将每个请求与服务器相关联,以及确认每个请求的接收以便启动在客户和相关联服务器之间直接的数据传输。 Said method comprising the steps of: receiving a request by the contact host, each request by the contact host associated with the server, and acknowledging receipt of each request to initiate data transfer directly between the client and the associated server.

[0012] 根据期望的配置,确认可以由相关联的服务器或者由联系主机来发送。 [0012] Depending on the desired configuration, acknowledgment may be sent by the server or the associated by the contact host. 使用前一种配置,本方法就可以进一步包括由相关联服务器从相应的客户接收要开始数据传输的证实的步骤。 Before using one configuration, the method may further comprises receiving from a server associated with the respective customer to confirm that data transfer step. 此外,其他消息也可以被交换以便初始化数据传输。 In addition, other messages may also be exchanged in order to initialize the data transmission.

[0013] 本方法还包括步骤:由联系主机将请求路由到相关联的服务器,这样该相关联的服务器可以确认每个请求。 [0013] The present method further comprises the step of: by the contact host route requests to the associated servers so that the associated servers may acknowledge each request. 该路由可以仅仅包括最初的请求,或者其可以包括联系主机从请求客户在最初的请求之后接收的附加消息。 The routing may include only the initial request, or it may comprise an additional message received from a contact host requesting client after the initial request.

[0014] 如上所述,联系主机可以直接向相应的客户确认该请求,而不是让相关联的服务器确认该请求。 [0014] As described above, contact the host can confirm that the request directly to the appropriate customer, rather than the associated server acknowledges the request. 使用该变型,本方法还可以包括步骤:由联系主机从被确认客户接收要开始数据传输的证实的步骤。 Using this variant, the method may further comprise the step of: receiving, by the contact host from the client is confirmed to confirm that data transfer step. 本方法还可以包括步骤:在数据传输已经开始之后和/或请求已经被联系主机接收之后,联系主机将来自请求客户的任何消息转发到相关联的服务器。 The method may further comprise the step of: after the data transfer has already started, after and / or contact host request has been received, the contact host messages from any client requests forwarded to the server is associated. 替换地,本方法还包括步骤:在数据传输已经开始之后和/或请求已经被联系主机接收之后, 丢弃任何由联系主机从客户接收的消息。 Alternatively, the method further comprising the step of: after the data transfer has already started, after and / or contact host request has been received, discarding any messages received by the contact host from the client. 丢弃消息会让客户将联系主机分类为非响应和/ 或非激活,通常会使客户采取另一个传输地址。 The client will discard message classified as non-contact host response and / or activation, generally will take another transport address of the client.

[0015] 本方法可以规定该确认包括用于相关联服务器的至少一个IP地址。 [0015] The present method can be provided that the acknowledgment comprises at least one IP address for the associated server. 当相关联服务器是多归属主机时,可以包括多个IP地址。 When the server is associated with a multi-homed host, it may comprise a plurality of IP addresses. 可以使用多归属主机且与本方法相兼容的一个协议的例子就是流控制传输协议。 Examples of a protocol may be used in multi-homed host and compatible with the present method is to stream control transmission protocol. 此外,本发明还可以包括最初的步骤:向联系主机提供单个地址以便接受请求以便在开始阻止客户对服务器的直接访问。 Further, the present invention may further comprise the initial steps of: providing a single address to accept requests to contact host to the client at the start blocking direct access to the server. [0016] 该关联步骤可以根据循环方案(round robin)选择相关联的服务器或者其可以确定在相关联服务器上的负荷并根据负荷平衡方案选择相关联的服务器。 [0016] The association step may select the associated server according to the program cycle (round robin) or it may determine the loads on the associated servers and select the associated server according to a load balancing scheme. 这种类型的关联在系统的配置中带来更多的便利,因为当产生请求时,只须知道用于联系主机的地址。 This type of association to bring more convenience in the configuration of the system, because when a request, only know the address to contact the host.

[0017] 本方法可以由联系主机动态地分配地址给服务器。 [0017] The present method may be by the contact host server to dynamically assign an address. 该动态分配可以使用诸如DHCP、无状态自动配置、全状态自动配置、NAT和NAPT等等类似的方案。 The dynamic allocation may be used such as DHCP, stateless autoconfiguration, stateful autoconfiguration, NAT, and NAPT like similar programs.

[0018] 在一些变型中,本发明还包括步骤:将联系主机安排驻留在单独的物理资源中而不是服务器中。 [0018] In some variations, the present invention further comprises the step of: the contact host arrangement reside in a separate physical server resources instead. 但是,在其他变型中,本方法还包括步骤:将联系主机安排驻留在与服务器相同的物理资源中。 However, in other variations, the method further comprising the step of: arrange the contact host server reside on the same physical resources. 此外,本方法还可以包括步骤:将服务器安排为在单个网络节点上的群以便提供到应用服务的连接性,或者其还可以包括步骤:将服务器安排为在两个或更多网络节点上的群以便提供到应用服务的连接性。 Furthermore, the method may further comprise the steps of: a server arranged in groups on a single network node in order to provide connectivity to an application service, or it may further comprise the step of: the server is arranged on two or more network nodes group in order to provide connectivity to applications and services.

[0019] 为了进一步使服务器与客户隔绝直接的联系(尤其为了阻止服务拒绝攻击),本方法还包括步骤:由联系主机认证每一个请求。 [0019] In order to further isolate the servers and clients direct link (in particular to prevent denial of service attacks), the method further comprising the step of: each of the contact host authentication request. 该认证例如可以基于在请求中指示的IP地址或其他与客户相关联的标识符。 This authentication may be based, for example, the IP address indicated in the request or other identifier associated with the client.

[0020] 本发明还可以体现为一种计算机程序产品,该计算机程序产品包括程序代码部分,用于当该计算机程序产品在计算机系统上运行时执行这里公开的方法的任何步骤。 [0020] The present invention can also be embodied as a computer program product, the computer program product comprising program code portions for performing the steps of any method disclosed herein when the computer program product runs on a computer system. 这种计算机程序产品,根据期望的实现,可以存储在计算机可读记录介质中。 Such a computer program product, according to the desired implementation, may be stored in a computer-readable recording medium.

[0021] 在另一个实施例中,提供了一种包括计算机处理器和耦接到该处理器的存储器的系统。 [0021] In another embodiment, there is provided a system comprising a computer processor and a memory coupled to the processor. 该系统的存储器可以使用一个或多个程序编码,该程序可以执行这里公开的方法的任何步骤。 The memory system may be encoded using one or more programs, the program can perform any steps of the methods disclosed herein.

[0022] 本发明还可以包括一种联系主机,用于处理从多个客户接收的启动请求。 [0022] The present invention may further comprise one contact host for processing start request received from a plurality of clients. 该联系主机可以包括用于接收请求的接收单元;用于将每个请求与服务器相关联的关联单元;和用于启动对每个请求客户的确认以便建立在至少一个请求客户与相关联的服务器之间的数据传输信道的确认单元,其中该数据传输信道绕过了该联系主机。 The contact host may include a receiving unit for receiving a request; server for each request associated with the association unit; and a start in order to establish at least one server associated with the requesting client for each client confirmation request confirming unit between data transmission channel, wherein the data transmission channel bypassing the contact host. 在一些变型中,该启动单元将请求路由到相关联的服务器,这样该相关联的服务器可以确认每个请求。 In some variations, the starting unit to route requests to the associated servers so that the associated servers may acknowledge each request. 在其他变型中,该启动单元直接确认每个请求。 In other variations, the starting unit directly checking each request. 由启动单元启动的确认可以包括用于相关联服务器的至少一个IP地址。 Acknowledgment initiated by the initiating unit may include at least one IP address for the associated server. 此外,联系主机还可以包括认证单元,用于认证每个请求。 In addition, the contact host may further include an authentication unit for authenticating each request.

[0023] 本发明还可以在一种系统中提供,该系统包括多个客户,用于产生数据传输启动请求;多个服务器,用于处理由多个客户请求的数据传输;和联系主机,用于处理从所述多个客户接收的启动请求。 [0023] The present invention may also be provided in a system, the system comprising a plurality of clients, for generating a data transmission start request; a plurality of servers for processing data transmitted by a plurality of client requests; and the contact host, with starting to process requests received from the plurality of clients. 该联系主机包括用于接收请求的接收单元;用于将每个请求与服务器相关联的关联单元;和用于启动对每个请求客户的确认的确认单元。 The contact host includes a receiving unit for receiving a request; means for associating each request associated with the server; and a confirming unit to confirm a start of each of the requesting client. 此外,该系统包括在至少一个请求客户与相关联的服务器之间的数据传输信道,该数据传输信道绕过了该联系主机。 In addition, the system includes at least one request for a data transmission channel between the client and server associated with the data transmission channel bypassing the contact host.

附图说明 BRIEF DESCRIPTION

[0024] 本发明更进一步的细节、实施例、修改和增强将从考虑以下本发明各种实例性实施例的描述以及附图而获得,其中: [0024] The present invention still further details, embodiments, modifications and enhancements are obtained from a consideration of the following exemplary embodiments of the present invention, various embodiments of the description and the accompanying drawings, wherein:

[0025] 图1是信令图示,显示用于在客户和服务器之间交换启动请求和确认的传统技术; [0025] FIG. 1 is a signaling chart showing a switching between a client and a server start request and the conventional art recognized;

[0026] 图2是显示本发明的方法实施例的流程图;[0027] 图3是显示本发明的装置实施例的示意图; [0026] FIG. 2 is a flowchart of a method embodiment of the present invention; [0027] FIG. 3 is a schematic of an embodiment of the display device of the present invention;

[0028] 图4是一个有助于理解和实现本发明实例的示意图,显示了客户发送启动请求到联系主机,该联系主机随后转发该请求到服务器,该服务器进而又发送该请求的确认到客户; [0028] FIG. 4 is a diagram showing an example helpful to understand and implement the present invention showing the client sends a request to start the contact host, the contact host then forwards the request to the server, which in turn transmits the confirmation request to the client ;

[0029] 图5是一个有助于理解和实现本发明实例的示意图,显示了客户发送启动请求到联系主机,该联系主机发送识别该服务器的该请求的确认到客户; [0029] FIG. 5 is a diagram showing an example helpful to understand and implement the present invention, the display to confirm that the client transmits a start request to contact the host, the contact host transmits the identification of the request the server to the client;

[0030] 图6是一个有助于理解和实现本发明实例的信令图,显示了客户发送启动请求到联系主机,该联系主机随后转发该请求到服务器,该服务器进而又发送该请求的确认到客户,这样可以绕过联系主机在服务器和客户之间开始数据传输;和 [0030] FIG 6 is a signaling diagram helps to understand and implement the present example of the invention, shows a client sending a request to start the contact host, the contact host then forwards the request to the server, which in turn sends an acknowledgment of the request to customers, so you can bypass contact the host to start the data transfer between the server and the client; and

[0031] 图7是一个有助于理解和实现本发明实例的信令图,显示了客户发送启动请求到联系主机,该联系主机进而又发送识别该服务器的该请求的确认到客户,这样可以绕过联系主机在服务器和客户之间开始数据传输。 [0031] FIG. 7 is a signaling diagram helps to understand and implement the present example of the invention, shows a client sending a request to start the contact host, which in turn transmit the identification contact host acknowledges the request of the server to the client, which can Contact bypassing the host starts the data transfer between the server and the client.

具体实施方案 Specific embodiments

[0032] 为了解释而不是限制的目的,在以下描述中陈述特定的细节,诸如特定步骤顺序和各种配置等等,以便提供对本发明充分的理解。 [0032] purposes of explanation and not limitation, specific details are set forth in the following description, the particular sequence of steps and various configurations, etc., such as, in order to provide a thorough understanding of the present invention. 对于本领域技术人员来说很明显,本发明可以以其他偏离这些特定细节的实施例来实现。 For the skilled person it is clear that the present invention may be implemented in other embodiments that depart from these specific details. 此外,本领域技术人员将理解,以下解释的功能可以使用软件功能结合被编程的微处理器或通用计算机,和/或使用专用集成电路(ASIC)来实现。 Moreover, those skilled in the art will appreciate that the functions explained below may be used in conjunction with a microprocessor or a software function programmed general purpose computer, and / or application specific integrated circuit (ASIC) to achieve. 还将理解,虽然本发明主要描述为一种方法,但是其也可以实现为一种计算机程序产品或一种包括计算机处理器和耦接到该处理器的存储器的系统来实现,其中该存储器使用可以执行这里公开的方法的一个或多个程序编码。 Will also be understood that although the present invention is primarily described as a method, it may also be implemented as a computer program product or comprising a computer processor and a memory coupled to the processor of the system is achieved, wherein the memory use may execute one or more programs encoding method disclosed herein. 此外,虽然本发明的描述与SCTP相关,但是本领域的技术人员将理解,其可以结合各种数据传输协议和应用来使用,在这些数据传输协议和应用中,在客户和服务器的关联之前,由客户发送启动请求。 Additionally, while the present invention is related to the SCTP, those skilled in the art will appreciate that it may be combined with various data transmission protocols and applications used in these applications and data transfer protocols, the client and server prior to the association, start request sent by the client.

[0033] 参考图2,显示了一个与一种处理启动请求的方法相关联的流程图,该启动请求从多个客户指向联系主机。 [0033] Referring to FIG 2, a flow chart shows a method of processing associated with the start-up request associated with the request from a start point to a plurality of clients contact the host. 在步骤210,该方法开始于(服务器)联系主机接收请求。 In step 210, the method starts (server) contact host receives the request. 在接收到请求之后,在步骤220,联系主机将每个请求和服务器相关联。 After receiving the request, in step 220, each contact host requests and associated server. 之后,在步骤230,每个请求的接收确认被发送到请求客户,这样就可以随后在客户和相关联服务器之间直接开始数据传输。 Thereafter, in step 230, each receiving a confirmation request is sent to the requesting client, so the client can subsequently between the server and the associated data transmission is started directly. 可选地,该联系主机也可以认证每个请求(和/或客户发送请求),尤其是为了提供进一步保护以抵抗DoS攻击。 Optionally, the contact host may also authenticate each request (and / or the client sends a request), in particular to provide a further protection against DoS attacks.

[0034] 图3显示了联系主机300,该联系主机300被配置来处理从多个客户接收的启动请求。 [0034] FIG. 3 shows the contact host 300, the contact host 300 is configured to start processing requests received from a plurality of clients. 接收单元310从各种客户接收请求。 The receiving unit 310 receives requests from various clients. 关联单元320将每个接收到的请求和服务器相关联,确认单元330启动对请求客户的确认(或者直接通过联系主机或者通过相关联的服务器)。 Association unit 320 to each of the received requests and associated server, start confirmation unit 330 to confirm the customer's request (either directly or through contact host via the associated server). 可选地,联系主机300还可以包括认证单元320,其认证发送请求的每个客户(尤其是为了进一步隔离服务器防止受DoS攻击)。 Optionally, the contact host 300 may further include an authentication unit 320, each client which transmits the authentication request (in particular in order to further isolate the server by preventing DoS attacks). 图2和图3所示本发明的实施例的变型以及有助于理解和实现本发明的实例将在下面介绍并在图4-7中示出。 FIGS. 2 and 3 shown in FIG variant of the embodiment of the invention and facilitate the understanding and implementation of the invention will be described in the following examples and shown in Figures 4-7.

[0035] 图4所示的是示意图400,其显示了(服务器)联系主机410、客户420,和至少一个服务器430 (或至少一个服务器群)之间的关系,所有这些都经由网络(诸如IP网络440) 耦接。 [0035] FIG. 4 is shown a schematic diagram 400 showing the relationship between client 420, server 430 and at least one (or at least a server farm) (server) contact host 410, all via a network (such as IP network 440) are coupled. 客户420可以经由IP网络440发送启动请求450 (例如,在SCTP的情况下是INIT 消息)到联系主机410。 The client 420 may request 450 IP network 440 via the transmission start (e.g., in the case of SCTP INIT message) to the contact host 410. 联系主机410然后可以认证该请求(例如,通过确定客户420是否被允许与服务器430通信)。 Contact host 410 may then authenticate the request (e.g., by determining whether the client 420 is allowed to communicate with the server 430). 如果客户420(和/或请求450)还没有被认证,那么联系主机410可以使用ABORT消息(在SCTP的情况下)或其他终止消息回复给客户420。 If the client 420 (and / or requests 450) has not been authenticated, then the contact host 410 may use ABORT message (in the case of SCTP) or other reply message to the client 420 terminates.

[0036] 如果客户420被认证(或者,如果联系主机410没有配置来认证客户420和/或请求450),那么联系主机410就选择一个合适的服务器430来响应并处理该请求450。 [0036] If the client 420 is authenticated (or, if the contact host 410 is not configured to authenticate the client 420 and / or 450 request), then the contact host 410 selects an appropriate server 430 to process the request 450 and response. 一旦服务器430已经被选择,那么联系主机410就经由IP网络440转发或中继该请求460 (或者产生一个新的具有被请求信息的请求)到被选择的服务器430 (根据协议其可以请求在联系主机410和服务器430之间交换几个消息,诸如INIT和INIT ACK,等等)。 Once the server 430 has been selected, then the contact host 410 via the relay network or IP 440 forwarding the request 460 (or generate a new request with the requested information) to the selected server 430 (which may be according to the protocol request Information host 410 and the server exchange several messages 430, such as the ACK INIT and INIT, etc.). 可以基于确定如何平衡/共享在各种服务器中的负荷(例如,基于由每个服务器或由耦接到服务器的负荷监控器提供的性能统计量)来选择服务器430,这些服务器与联系主机410相关联或者耦接到联系主机410,或者替换地,可以使用诸如循环选择方案来选择服务器430。 Can be determined based on how balanced / load share various servers (e.g., performance based on statistics provided by each server or a server coupled to a load monitor) to select the server 430, the servers 410 associated with the contact host linked or coupled to the contact host 410, or alternatively, may be used such as a selection scheme server 430 to select the loop. 替换地, 服务器430可以转发该启动消息到相同服务器群中其他成员,直到在这些各种服务器中识别了合适的候选者。 Alternatively, the server 430 may forward the initiation message to the other members of the same server farm, until suitable candidates identified in these various servers.

[0037] 为了确保客户420和服务器430被相关联(从而可以传输数据),联系主机410可以发送地址配置改变消息(在SCTP情况下是ASCONF消息)到客户420,指定服务器430作为未来消息的适当接收方。 [0037] In order to ensure the client 420 and the server 430 are associated with (so as to transmit data), the contact host 410 may send an address configuration change message (a ASCONF message in the case of SCTP) to the client 420 before the server 430 as the next message appropriate receiver. 如果地址配置消息的确认(例如,在SCTP情况下是ASOCNF ACK) 被联系主机410接收,那么联系主机410可以删除与该关联有关的所有状态信息。 If the address configuration acknowledgment message (e.g., in the case of SCTP ASOCNF ACK) received by the host link 410, the contact host 410 may then delete all status information relating to the association. 另一方面,如果客户420使用指示未识别程序块类型的错误消息(例如,在SCTP情况下是ERROR) 回复,那么联系主机410可以静静地丢弃输入的数据消息和用于关联的HEARTBEAT消息。 On the other hand, if the client 420 indicating the block type is not identified error message (e.g., in the case of SCTP ERROR) reply, then the contact host 410 may silently discard data input and a message for the associated message HEARTBEAT. 之后,客户420可以最后确定该联系主机410是非激活的,并将对属于服务器430的其他地址中的一个执行故障恢复(fail-over)。 Thereafter, the client 420 may determine that the last contact host 410 is inactive, and to perform a fault address belonging to the other servers 430 recovery (fail-over).

[0038] 服务器430可以经由IP网络440发送响应于请求450的确认470 (例如,INIT ACK 消息等等),这样可以在服务器430和客户420之间建立关联480 (例如,SCTP关联等等) (以便有利于,例如,服务器430和客户420之间的数据传输)。 [0038] Server 430 may send a response 440 via the IP network to request acknowledgment of 470,450 (e.g., INIT ACK message, etc.), and 480 can be established (e.g., the SCTP association and the like) an association between the server 430 and the client 420 ( in order to facilitate, for example, data transmission between the server 430 and client 420). 根据实现,可以在开始关联之前,在服务器430和客户420之间交换进一步的握手信号。 Depending on the implementation, you may begin before the association between the server and the client 430 420 exchange further handshake. 此外,使用该配置,由联系主机410从客户420接收的任何进一步与原始请求450有关的消息,诸如其他初始化消息(例如,如RFC 2960中描述的COOKIE ECHO消息等等),可以被直接路由到服务器430 (这样服务器430可以直接对其响应)。 In addition, the use of this arrangement, any further messages related to the original request 450 received by the contact host 420 from the client 410, other initialization message (e.g., such as the COOKIE ECHO message is described in RFC 2960, etc.), such as may be routed directly to server 430 (so that the server 430 can be directly in response thereto).

[0039] 服务器430到客户420的确认470和/或其他初始化消息包括识别服务器430随后被联系到什么位置的服务器地址。 420 confirmed 470 and / or other initialization message includes recognition server 430 is then linked to the server address what position [0039] server 430 to the client. 服务器地址可以是属于服务器430的“半固定”分配的地址,或者其可以是动态分配的地址。 The server address of the server 430 belonging to "semi-fixed" address allocation, or it may be dynamically assigned address. 例如,服务器430可以动态分配地址到它的一些(或全部)接口。 For example, the server 430 may dynamically assign an address to it some (or all) interfaces. 该分配可以使用诸如动态主机配置协议(DHCP)、无状态/全状态自动配置、 网络地址转换(NAT)或网络地址端口转换(NAPT)等等技术来产生。 The assignment may be used, such as a Dynamic Host Configuration Protocol (the DHCP), stateless / stateful autoconfiguration, Network Address Translation (NAT) or network address port translation (the NAPT) techniques to generate the like. 通过使用动态分配,每个关联可以被提供其在服务器430上的自己的真实(经由DHCP分配给服务器接口的IP地址)或虚拟(经由NAT的地址映射)的端点。 By using dynamic allocation, each association can be provided with its own true (IP address of the interface to the server via DHCP assignment) or virtual (NAT address mapping via a) endpoint on the server 430.

[0040] 图5显示了示意图500 (其中图4的共同信号和组件被显示使用了相同的参考数字),其中,客户410发送请求到联系主机430,联系主机发送确认510 (例如INIT消息等等)到客户。 [0040] FIG. 5 shows a diagram 500 (FIG common signal and wherein assembly 4 is shown using the same reference numbers), wherein the client 410 sends a request to a contact host 430, the contact host 510 transmits an acknowledgment (INIT message like e.g. ) to customers. 之后,服务器420和客户410之间就建立了关联480。 After that, the server between 420 and 410 customers on the establishment of an association 480. 使用该变型,联系主机430就可以执行与关联480的初始化有关的各种步骤,诸如选择合适的服务器420 (其可以包括进一步的与状态信息的交换有关的信令),准备在被选择的服务器420中的状态以便 Using this variant, the contact host 430 may perform initialization associated 480 associated with the various steps, such as selecting an appropriate server 420 (which may further include status information relating to the exchange of signaling), prepared in the selected server 420 in a state to

8用于数据传输阶段,和强制数据传输阶段由被选择的服务器420处理(例如,通过保持状态信息处于关联,并且不对各种程序块进行回答,以便起到无用的接口的作用,从而强制客户410中的多归属重新定向通信量到驻留在服务器420中的剩余地址)。 8 for the data transfer phase, the data transfer phase and forced by the selected processing server 420 (e.g., by maintaining the state information is associated, and not to answer various blocks, so as to function as an interface of useless, thus forcing the customer multihoming 410 redirect traffic to the remaining address resident in server 420). 与图4的实例相反, 联系主机430可以可选地直接响应从客户410接收的各种初始化消息(例如,COOKIE ECHO 消息,等等)。 In contrast to the example of Figure 4, the contact host 430 may optionally be in direct response to the various initialization message (e.g., COOKIE ECHO message, etc.) received from the client 410. 可替换地,联系主机430可以简单地丢弃除了启动请求之外的其他消息(例如,DATA消息,HEARTBEAT消息,等等),这样,联系主机430就被宣称为客户410不可到达的。 Alternatively, the contact host 430 may simply discard other messages (e.g., DATA message, HEARTBEAT messages, etc.) in addition to the start-up request, so that the contact host 430 to the client 410 was declared unreachable.

[0041] 图6显示了基于SCTP的,在具有相关联的IP地址{IP Al,...,ΙΡΑη}和端口PA的客户610 (端点EP A)、具有相关联IP地址{IPC1,...,IP Co}和端口PZ的联系主机620(端点EP C)、和具有相关联IP地址{IP Zl,..., IP Zm}和端口PZ的服务器630 (端点EP Z)之间的信令图示600。 [0041] Figure 6 shows based on the SCTP, the IP addresses associated with {IP Al, ..., ΙΡΑη} port PA and the client 610 (end point EP A), having associated IP addresses {IPC1, .. ., IP Co} and a port PZ contact host 620 (end point EP C), and having an associated IP addresses {IP Zl, ..., IP Zm communication between the server 630 and the port PZ (endpoint EP Z)} make icon 600. 客户610可以发送启动请求640到联系主机620。 Client 610 can send a request to start 640 to contact the host 620. 该启动请求640可以包括诸如以下的信息:目的地IP地址=IPCw ;源IP地址=IP Ax(源端口= PA ;目的地端口= PZ ;程序块=INIT ;端点IP地址={IP Al,... ,IP An})。 The activation request 640 may include information such as the following: destination IP address = IPCw; Source IP address = IP Ax (source port = PA; destination port = PZ; chunk = INIT; end point IP addresses = {IP Al ,. .., IP An}). 在联系主机620确定发送请求到服务器630之后(以上述方法),该请求就被转发650 (或另一个包含请求中信息的消息被产生)到服务器630。 After determining the contact host 620 sends a request to the server 630 (the above-described method), the request is forwarded 650 (or another message comprising the request information is generated) to the server 630. 然后服务器630就使用确认660响应客户610, 该确认可以包括诸如以下的信息:目的地IP地址=IP Ax;源IP地址=IP Zz(源端口= PZ ;目的地端口= PA ;程序块=INIT ACK ;端点IP地址={IP Zl,... ,IP Zm})。 Server 630 then uses the acknowledgment 660 in response to the client 610, the confirmation may include information such as the following: destination IP address = IP Ax; Source IP address = IP Zz (source port = PZ; destination port = PA; chunk = INIT the ACK; end point IP addresses = {IP Zl, ..., IP Zm}). 之后, 客户610和服务器630可以开始数据传输(或其他关联),该数据传输绕过或者说不使用联系主机620的功能。 Thereafter, the client 610 and server 630 may start data transfer (or other association), or to bypass the data transmission using the function say the contact host 620.

[0042] 图7显示了另一个基于SCTP的,在具有相关联的IP地址{IPA1,. . .,IP An}和端口PA的客户710 (端点EP A)、具有相关联IP地址{IP Cl,...,IP Co}和端口PZ的联系主机720(端点EP C)、和具有相关联IP地址{IP Zl, ... , IP Zm}和端口PZ的服务器730 (端点EP Z)之间的信令图示700。 [0042] FIG. 7 shows another based on the SCTP, the IP addresses associated with {IPA1 ,..., IP An} and a port PA client 710 (end point EP A), having associated IP addresses {IP Cl , ..., IP Co} and a port PZ contact host 720 (end point EP C), and having an associated IP addresses {IP Zl, ..., IP Zm} and a port PZ server 730 (end point EP Z) of 700 illustrating signaling between. 客户710可以发送启动请求740到联系主机720。 Client 710 can send a request to start 740 to contact the host 720. 该启动请求740可以包括诸如以下的信息:目的地IP地址=IP Cw;源IP地址=IP Ax(源端口= PA ;目的地端口= PZ ;程序块=INIT ;端点IP地址={IP Al,...,IP An})。 The activation request 740 may include information such as the following: destination IP address = IP Cw; Source IP address = IP Ax (source port = PA; destination port = PZ; chunk = INIT; end point IP addresses = {IP Al, ..., IP An}). 在联系主机720确定发送请求到服务器630之后(以上述方法),就发送确认750到客户710。 After determining the contact host 720 sends a request to the server 630 (above method), it sends an acknowledgment 750 to the client 710. 该确认750可以包括诸如以下的信息:目的地IP地址=IP Ax;源IP地址=IP Zz(源端口=PZ ;目的地端口= PA ;程序块=INIT ACK ;端点IP 地址={IP Z1,. . .,IP Zm})。 The confirmation 750 may include information such as the following: destination IP address = IP Ax; Source IP address = IP Zz (source port = PZ; destination port = PA; chunk = INIT ACK; end point IP addresses = {IP Z1, ..., IP Zm}). 之后,客户710和服务器730可以开始数据传输,该数据传输绕过或者说不使用联系主机720。 After that, the client 710 and server 730 can start data transfer, the data transfer to bypass or say using the contact host 720.

[0043] 根据期望的实现,可以对本发明的配置做出各种修改。 [0043] Depending on the desired implementation, various modifications may be made to the configuration of the present invention. 例如,联系主机可以是驻留在除了服务器之外的独立物理资源的专用机器。 For example, the contact host may reside on separate physical resources dedicated machine other than the server. 在其他变型中,联系主机位于与服务器相同的物理资源中(虽然该服务器可以最终不被联系主机选择或关联)。 In other variations, the contact host server located in the same physical resources (although the server may not ultimately be selected or associated contact host). 此外,服务器可以属于相同的网络节点(即,它们都提供对相同应用服务的连通性,诸如上述的应用层SCTP)。 In addition, the server may belong to the same network node (i.e., which provide connectivity to the same applications and services, such as the above application layer SCTP). 相反,服务器可以属于不同的网络节点,尽管提供相同的应用服务。 Instead, the server can belong to different network nodes, although applications provide the same service.

[0044] 通过确定各种与联系主机相关联的服务器的特征可以实现负荷平衡,诸如协议处理能力(即,由处理协议分组所占用的处理性能)、存储器占用(即,用于队列处理所需的存储器)和链路容量。 [0044] Load balancing can be determined by various characteristics of the servers associated with the contact host, such as a protocol processing capability (i.e., the packet processing protocol processing performance occupied), memory footprint (i.e., queue processing required for a memory) and the link capacity. 此外,联系主机可以周期地轮询各种服务器,或者替换地,负荷平衡监控器,来确定将未来的关联分配到哪里。 In addition, the contact host may poll periodically various servers, or alternatively, load balancing monitor to determine where the next allocation associated.

[0045] 如上所述,通过起到防火墙的作用(即,通过过滤不想要的请求),使用联系主机保护了服务器,防止其收到攻击。 [0045] As described above, play a role of the firewall (ie, by filtering unwanted request), use the contact to protect the host server to prevent it received attacks. 在诸如INIT的启动消息公开之前,实际服务器的IP地址不提供给客户。 Before starting such a message INIT open, IP address of the real server is not available to customers. 因此,正在进行的数据传输(例如,SCTP关联)不会受到不希望的请求影响,该不希望的请求将会占用服务器处理特性。 Thus, the ongoing data transmission (e.g., the SCTP association) will not be requested undesirable effects, the request will undesirably occupy server processing characteristics. 此外,联系主机提供单个联系地址,并对请求客户隐藏几个资源上潜在的服务器分布。 In addition, contact the host to provide a single contact address, and the hidden potential of client requests on several server resource distribution. 该分布可以以技术的方法来管理,诸如负荷平衡或循环分布,以便更均勻的采用负荷共享。 This distribution can be TECHNICAL management, such as load balancing or distribution cycle, in order to adopt a more uniform load sharing.

[0046] 此外,由于联系主机有利于产生对每个请求的确认,例如,通过(i)路由每个请求到相关联的服务器并让相关联服务器确认该请求;或(ii)使用确认(包括相关联服务器的传输地址)自己响应每个请求,数据传输可以直接在客户和相关联服务器之间启动,而不需要联系主机的进一步干预或中介。 [0046] Further, since the contact host facilitates the generation of acknowledgment of each request, for example, by (i) routes each request to the server and allow the associated server acknowledge the request is associated; or (ii) use an acknowledgment (including transmission address associated with the server) own response to each request, the data can be transmitted between the client and the server startup is associated directly, without the need to contact the host of further intervention or mediation. 虽然在一些变型中,联系主机可以路由或者处理与数据传输的启动有关的消息,但是在数据传输过程中联系主机并不涉及其中(在本文中的意思就是绕过)。 Although some variations, the contact host may initiate data processing or routing of the messages related to transfer, but the data transfer process does not involve contact host wherein (meaning herein is bypassed). 相反,在数据传输的各个阶段,路由器或其他设备处理数据。 In contrast, in various stages of data transmission, router or other data processing devices. 通过将由联系主机处理的消息事务限制到数据传输的启动,而不是数据传输本身,在大量数据传输过程中联系主机的处理能力就不会受到不利的影响,并且它们可以继续接受来自大量客户的请求,并有利于产生随后用来启动数据传输的确认。 Messages will contact the host processing transaction limit to initiate a data transfer, rather than the data transmission itself, in a large number of data transmission Contact host processing power will not be adversely affected, and they can continue to accept requests from a number of customers and facilitate an acknowledge then used to initiate data transfer.

[0047] 虽然本发明已经参考特定实施例来描述(在各个方法中包括某种系统配置和某种步骤顺序),本领域技术人员将认识到本发明并不限于这里所描述的特定的实施例。 [0047] While the present invention has been described with reference to particular embodiments (including certain system configurations and the sequence of some steps in each method), those skilled in the art will recognize that the invention is not limited to the specific embodiments described herein . 因此,虽然本发明是参考其优选实施例描述的,但是可以理解该公开仅仅是示例性的。 Accordingly, while the present invention has been described with reference to preferred embodiments thereof, it will be understood that this disclosure is only illustrative. 因此, 本发明仅仅由附加的权利要求的范围来限制。 Accordingly, the present invention is limited only by the scope of the appended claims.

Claims (18)

1. 一种处理从多个客户(420)指向联系主机(410)的启动请求的方法,所述方法包括以下步骤:由所述联系主机(410)接收所述请求;由所述联系主机(410)将每个请求与服务器(430)相关联;以及确认每个请求的接收以便启动在所述客户(420)和相关联的服务器(430)之间直接的数据传输,所述数据传输绕过所述联系主机(410),其中由所述联系主机(410)向所述客户(420)发送地址配置改变消息,指定所述相关联的服务器(430)作为未来消息的适当接收方,从而绕过所述联系主机(410)的所述数据传输能够被执行。 A method of handling requests from multiple clients to start (420) pointing to a contact host (410), said method comprising the steps of: receiving the request by the contact host (410); by the contact host ( 410) each request with a server (430) is associated; and acknowledging receipt of each request to initiate data transfer directly between (420) and associated with the server at the client (430), about the data transmission through the contact host (410), wherein, by the contact host (410) (420) transmits address configuration change message to the client, the server associated with the specified (430) as the appropriate future recipient of the message, so that bypassing the contact host (410) of the data transmission can be performed.
2.权利要求1的方法,其中,所述相关联的服务器(430)向相应的客户(420)确认所述请求。 The method of claim 1, wherein said associated server (430) (420) said confirmation request to the appropriate clients.
3.权利要求1或2的方法,还包括步骤:由所述相关联的服务器(430)从相应的客户(420)接收要开始数据传输的证实。 The method of claim 1 or claim 2, further comprising the step of: receiving, by the associated server (430) from the respective clients (420) to confirm that data transfer.
4.权利要求1或2的方法,还包括步骤:由所述联系主机(410)将所述请求路由到所述相关联的服务器(430),从而所述相关联的服务器(430)可以确认每个请求。 The method of claim 1 or claim 2, further comprising the step of: by the contact host (410) to route the request to the associated server (430), so that the associated servers (430) can be confirmed each request.
5.权利要求1的方法,其中,所述联系主机(410)向相应的客户(420)确认所述请求。 The method of claim 1, wherein the contact host (410) to confirm the request to the appropriate client (420).
6.权利要求5的方法,其中还包括步骤:由所述联系主机(410)从被确认客户(420)接收要开始数据传输的证实。 The method of claim 5, further comprising the step of: by the contact host (410) is confirmed from the client (420) to start reception of the confirmation of data transmission.
7.权利要求5或6的方法,其中还包括步骤:在所述数据传输已经开始之后,由所述联系主机(410)将来自被确认客户(420)的任何消息转发到所述相关联的服务器(430)。 The method of claim 5 or claim 6, further comprising the step of: after the data transfer has started, by the contact host (410) to be recognized from the associated client (420) of any messages forwarded server (430).
8.权利要求5或6的方法,其中还包括步骤:在所述数据传输已经开始之后,丢弃任何由所述联系主机(410)从客户(420)接收的消息。 The method of claim 5 or claim 6, further comprising the step of: after the data transmission has started, no link message is discarded by the host (410) received from a client (420).
9.权利要求1或2的方法,其中,所述确认包括用于所述相关联的服务器(430)的至少一个IP地址。 9. A method as claimed in claim 1 or 2, wherein the acknowledgment comprises at least one IP address for the associated server (430).
10.权利要求9的方法,其中,每个相关联的服务器(430)是多归属的。 10. The method of claim 9, wherein each associated server (430) is a multi-homing.
11.权利要求1或2的方法,其中,所述关联步骤根据循环方案选择所述相关联的服务器(430)。 11. A method as claimed in claim 1 or 2, wherein said step of associating said selected associated server (430) in accordance with the program loop.
12.权利要求1或2的方法,其中,所述关联步骤确定在所述相关联的服务器(430)上的负荷并根据负荷平衡方案选择所述相关联的服务器(430)。 12. A method as claimed in claim 1 or 2, wherein the step of determining the association of the loads on the associated servers (430) and select the associated server (430) according to a load balancing scheme.
13.权利要求1或2的方法,还包括步骤:由所述联系主机(410)动态地分配地址给所述服务器(430)。 13. The method as claimed in claim 1 or 2, further comprising the step of: assigning addresses to the server (430) dynamically by the contact host (410).
14.权利要求1或2的方法,其中,传输协议是流控制传输协议。 14. A method as claimed in claim 1 or 2, wherein the transport protocol is the Stream Control Transmission Protocol.
15.权利要求1或2的方法,还包括步骤:由所述联系主机(410)认证每个请求。 15. A method as claimed in claim 1 or 2, further comprising the step of: by the contact host (410) for each authentication request.
16.权利要求1或2的方法,还包括最初的步骤:向所述联系主机(410)提供单个地址以便接受请求以便在最初阻止由所述客户(420)对所述服务器(430)的直接访问。 16. A method as claimed in claim 1 or 2, further comprising the initial steps of: providing a single address to the contact host (410) to accept requests to initially prevent by said client (420) to direct the server (430) access.
17. 一种联系主机(410),用于处理从多个客户(420)接收的启动请求,所述联系主机(410)包括:用于接收所述请求的接收单元(310); 用于将每个请求与服务器(430)相关联的关联单元(320);和用于启动对每个请求客户(420)的确认以便建立在至少一个请求客户(420)与相关联的服务器(430)之间的数据传输信道(670,760)的确认单元(330),其中所述数据传输信道(670,760)绕过所述联系主机(410),其中由所述联系主机(410)向所述客户(420)发送地址配置改变消息,指定所述相关联的服务器(430)作为未来消息的适当接收方,从而绕过所述联系主机(410)的所述数据传输能够被执行。 17. A contact host (410), a processing start request received from a plurality of clients (420), the contact host (410) comprising: means for receiving (310) receiving the request; means for each request with a server (430) associated with the association unit (320); and a start confirmation for each requesting client (420) in order to establish at least one requesting client with the server (420) associated with (430) of data transmission channel (670,760) between the confirmation unit (330), wherein said data transmission channel (670,760) bypassing the contact host (410), wherein, by the contact host (410) to the client ( 420) transmits address configuration change message, specifying the associated server (430) as the appropriate future recipient of the message, so that the data transfer bypasses the contact host (410) can be performed.
18. 一种用于处理与确认传输协议相关联的启动请求的系统,所述系统包括: 多个客户(420),用于产生数据传输启动请求;多个服务器(430),用于处理由所述多个客户(420)请求的数据传输; 联系主机(410),用于处理从所述多个客户(420)接收的启动请求;和在至少一个请求客户(420)与相关联的服务器(430)之间的数据传输信道(670,760), 其中所述数据传输信道(670,760)绕过所述联系主机(410), 其中所述联系主机包括: 用于接收所述请求的接收单元(310); 用于将每个请求与服务器(430)相关联的关联单元(320);和用于启动对每个请求客户(420)的确认的确认单元(330),其中由所述联系主机(410)向所述客户(420)发送地址配置改变消息,指定所述相关联的服务器(430)作为未来消息的适当接收方,从而绕过所述联系主机(410)的所述数据传输能够被 18. A system start-up processing and the transmission protocol associated with the acknowledgment request, the system comprising: a plurality of clients (420), for generating a data transmission start request; a plurality of servers (430), for processing the said plurality of data transfer client (420) requests; contact host (410), for processing start request received from the plurality of clients (420); at least one requesting client and a server (420) associated with data transmission channel between the (430) (670,760), wherein said data transmission channel (670,760) bypassing the contact host (410), wherein said contact host comprising: means for receiving the request a receiving unit (310); for each request with a server (430) associated with the association unit (320); and a confirmation unit for activating each acknowledgment for the requesting client (420) (330), wherein the the said contact host (410) (420) sends the address change message to the client configuration, specifying the associated server (430) as the appropriate future recipient of the message, thereby bypassing the contact of the host (410) the data transfer can be 行。 Row.
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